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3. Green, G. E. (1969). Report on Tests on the Performance of the Wilson Slope Indicator and the Soil Instruments Inclinometer. Imperial College, London. Unpublished. Summary in Green's paper to this Symposium.
4. Meese, R. H. (1970). Interim Report on Performance Analysis of Cylinder-Beam Retaining Walls, Seattle Freeway, Seneca Street to Olive Way. University of Washington. Report submitted to Washington State Highway Commission.
5. Peck, R. B. (1970). Observations and Instrumentation: Some Elementary Considerations. Seminar on Field Observations in Foundation Design and Construction. New York Met Section, ASCE.